"Invalid Content" Responses from Server

Global Block

"Invalid Content" response means that WHOIS or HTTP server returned response that the program cannot recognize. Global Block is used to block servers constantly returning wrong responses. Global Block count for a particular server increased every time the server returned invalid response. When this count exceed the number you define, this server won't be used anymore until your restart the program.
Default value: 300

Per-Domain Block

Per-Domain Block is used to block servers returning wrong responses for a particular domain only. This count for a particular server and a particular domain increased every time the server returned invalid response regarding the domain. When this count exceed the number you define, this server won't be used while checking this domain until your restart the program.
Default value: 5